基于有限元分析的在役加氢反应器安全性分析

发布时间：2018-05-31 00:35

本文选题：加氢反应器 + 安全评估　；参考：《沈阳航空航天大学》2017年硕士论文

【摘要】：加氢反应器是原油炼化过程中的核心设备,由于其长期在高温、高压、临氢及硫化氢腐蚀的操作环境下工作,一旦发生事故会导致重大损失。一直以来,在役加氢反应器的安全性和可靠性研究分析是压力容器安全性分析的重点和难点,本文采用有限元软件能够对复杂结构进行结构分析的特点,通过针对加氢反应器的主要结构进行了力学综合分析,进而判断在役加氢反应器的安全性。这对监测和控制加氢反应器的安全性具有重要的现实意义。(1)本文在对加氢反应器的基本结构和主要工艺流程概述的基础上,针对加氢反应器的机械结构,对影响加氢反应器可靠度的各类参量的概率分布规律和特征参数进行统计分析。同时,采用响应面法计算内压作用下加氢反应器内壁结构的可靠度,从而证明本文设计的加氢反应器结构的可靠度满足计算要求。(2)本文建立了加氢反应器主要结构的可靠度分析模型,并且运用ANSYS软件的可靠性分析模块对其进行了进行可靠度研究,获得各模型的可靠度值,并对该模型的尺寸参数、载荷参数和材料参数的灵敏度进行了分析。(3)在可靠度计算的基础上,本文建立了加氢反应器的故障树模型,同时综合利用风险矩阵法、模糊数学理论等安全分析方法,提出了基于风险矩阵的加氢反应器综合安全评估方法,从而,通过分析计算系统综合风险等级值判定加氢反应器的综合风险等级。
[Abstract]:Hydrogenation reactor is the core equipment in crude oil refining process. Because of its long-term operation environment of high temperature, high pressure, hydrogen and hydrogen sulfide corrosion, once an accident occurs, it will lead to great losses. The research and analysis of the safety and reliability of in-service hydrogenation reactor has been the key and difficult point in the safety analysis of pressure vessel. In this paper, the finite element software is used to analyze the structure of complex structure. The safety of the in-service hydrogenation reactor was judged by comprehensive mechanical analysis of the main structure of the hydrogenation reactor. This has important practical significance for monitoring and controlling the safety of hydrogenation reactor. (1) based on the outline of the basic structure and main technological process of the hydrogenation reactor, this paper aims at the mechanical structure of the hydrogenation reactor. The probability distribution and characteristic parameters of various parameters affecting the reliability of hydrogenation reactor were analyzed statistically. At the same time, response surface method is used to calculate the reliability of the inner wall structure of the hydrogenation reactor under the action of internal pressure. Therefore, it is proved that the reliability of the hydrogenation reactor designed in this paper meets the calculation requirements. (2) the reliability analysis model of the main structure of the hydrogenation reactor is established in this paper. The reliability of each model is obtained by using the reliability analysis module of ANSYS software, and the dimension parameters of the model are given. On the basis of reliability calculation, the fault tree model of hydrogenation reactor is established. At the same time, safety analysis methods such as risk matrix method and fuzzy mathematics theory are used synthetically. The comprehensive safety assessment method of hydrogenation reactor based on risk matrix is proposed. The comprehensive risk level of hydrogenation reactor is determined by analyzing and calculating the comprehensive risk grade of the system.
【学位授予单位】：沈阳航空航天大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE966

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